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Assam Agricultural University, Jorhat

Assam Agricultural University is the first institution of its kind in the whole of North-Eastern Region of India. The main goal of this institution is to produce globally competitive human resources in farm sectorand to carry out research in both conventional and frontier areas for production optimization as well as to disseminate the generated technologies as public good for benefitting the food growers/produces and traders involved in the sector while emphasizing on sustainability, equity and overall food security at household level. Genesis of AAU - The embryo of the agricultural research in the state of Assam was formed as early as 1897 with the establishment of the Upper Shillong Experimental Farm (now in Meghalaya) just after about a decade of creation of the agricultural department in 1882. However, the seeds of agricultural research in today’s Assam were sown in the dawn of the twentieth century with the establishment of two Rice Experimental Stations, one at Karimganj in Barak valley in 1913 and the other at Titabor in Brahmaputra valley in 1923. Subsequent to these research stations, a number of research stations were established to conduct research on important crops, more specifically, jute, pulses, oilseeds etc. The Assam Agricultural University was established on April 1, 1969 under The Assam Agricultural University Act, 1968’ with the mandate of imparting farm education, conduct research in agriculture and allied sciences and to effectively disseminate technologies so generated. Before establishment of the University, there were altogether 17 research schemes/projects in the state under the Department of Agriculture. By July 1973, all the research projects and 10 experimental farms were transferred by the Government of Assam to the AAU which already inherited the College of Agriculture and its farm at Barbheta, Jorhat and College of Veterinary Sciences at Khanapara, Guwahati. Subsequently, College of Community Science at Jorhat (1969), College of Fisheries at Raha (1988), Biswanath College of Agriculture at Biswanath Chariali (1988) and Lakhimpur College of Veterinary Science at Joyhing, North Lakhimpur (1988) were established. Presently, the University has three more colleges under its jurisdiction, viz., Sarat Chandra Singha College of Agriculture, Chapar, College of Horticulture, Nalbari & College of Sericulture, Titabar. Similarly, few more regional research stations at Shillongani, Diphu, Gossaigaon, Lakhimpur; and commodity research stations at Kahikuchi, Buralikson, Tinsukia, Kharua, Burnihat and Mandira were added to generate location and crop specific agricultural production packages.

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Subject: Nematology × Author: Buragohain, Pallab × Start date: 2015 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    OCCURRENCE AND DISTRIBUTION OF ROOT-KNOT NEMATODE Meloidogyne incognita IN PATCHOULI Pogostemon cablin
    (AAU, Jorhat, 2016-07) Buragohain, Pallab; Gogoi, B.B.
    Patchouli [Pogostemon cablin (Blanco)] is an important aromatic plant belonging to family Lamiaceae, is a native of Philippines (Arpana et al., 2008). It is grown wild in Malaysia, Indonesia, Singapore and few other countries. Owing to high demand of its essential oil many countries have domesticated this crop. It has multiple uses, it is used in cosmetics, breath fresheners, flavouring baked foods, meat, sausages, etc. Patchouli is very susceptible to root -knot nematode and wilt causing pathogens. In moist and wet weather condition root knot infestation is high in plants which may lead to wilting of plant and kill the plant within 2-3 days due to secondary infection by fungal and bacterial pathogens. The study on “Occurrence and distribution of root-knot nematode Meloidogyne incognita in patchouli Pogostemon cablin” was carried out in the year 2014 -2016, in Golaghat, Nagaon, Jorhat and Sonitpur districts by conducting a survey programme. A total of 123 samples were collected randomly from the four districts. Root-knot infestation was recorded in most of the fields covering the four districts. Root and soil samples were found to be heavily infested by root-knot nematode. The maximum frequency was recorded in Nagaon districts i.e. 38.88 per cent whereas minimum frequency of 21.87 per cent was recorded in Golaghat district. Many fungal pathogens were found to be associated with most of the root-knot infested plants. In the present investigation, three fungal pathogens were found to be associated with root-knot infested plants. They are Fusarium sp., Rhizoctonia solani and Cercospora sp. It has been observed that the patchouli plants are also infested by different insect pests like leaf roller and grass hopper. These insect pests are voracious eater and almost eat up the green foliage leading to defoliation and heavy yield loss.